A man walked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, ...

A man stalked through a Manhattan office tower firing a rifle Monday, killing four people, including a New York City police officer, and wounding a fifth before taking his own life, officials said.

A police officer was among the dead. The gunman carried an M4 rifle and died after shooting himself in the chest, police said ...

The rampage happened at the end of the workday in the same part of Manhattan where the chief executive of UnitedHealthcare ...